Robert Pattinson and Kristen Stewart to promote Twilight separately

It's thought that Robert Pattinson, Kristen Stewart and Taylor Lautner will promote Breaking Dawn separately

Robert Pattinson and Kristen Stewart's personal problems continue to have an impact on the release of Twilight Breaking Dawn Part 2 with new reports that the stars will do the bulk of the promotional work separately.

The Sun reports that Kristen Stewart's afair with Rupert Sanders has caused the film studio to try and split Rob and Kristen up for as much of the movie's promotion as possible.

An insider told the paper that Rob will visit Australia, Kristen will head to Japan, while the other Twilight leading man, Taylor Lautner, is expected to head to Brazil at the same time.

A source said: 'Many of Rob's fans are still angry with Kristen and it has been decided that all three should go their separate ways.

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'Keeping them apart will mean less chance of reprisals from fans who were devastated by the split.'

However, they added: 'No decision has been made on the London premiere, which is happening a little later in November.'

There are, however, also reports that Rob and Kristen are contractually obliged to appear together at certain promotional events, so we can expect them to walk the red carpet together at some point.

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A source told Radar Online: 'Their individual contracts have very specific language about what is legally required of Rob and Kristen to do on the publicity tour. The studio execs at Summit weren't happy when Rob and Kristen broke up, but this is why there are clauses about what is required of the stars to do.

'The promotional tours of the past Twilight movies are very much anticipated by the fans and almost becomes bigger than the movie.'

WATCH: The Twilight Breaking Dawn Part 2 trailer below.

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